+++ /dev/null
-package org.apache.lucene.analysis.query;
-/**
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-import java.io.IOException;
-import java.io.Reader;
-import java.io.StringReader;
-
-import org.apache.lucene.analysis.Analyzer;
-import org.apache.lucene.analysis.BaseTokenStreamTestCase;
-import org.apache.lucene.analysis.MockAnalyzer;
-import org.apache.lucene.analysis.MockTokenizer;
-import org.apache.lucene.analysis.TokenStream;
-import org.apache.lucene.document.Document;
-import org.apache.lucene.document.Field;
-import org.apache.lucene.index.IndexReader;
-import org.apache.lucene.index.IndexWriter;
-import org.apache.lucene.index.IndexWriterConfig;
-import org.apache.lucene.index.Term;
-import org.apache.lucene.queryParser.ParseException;
-import org.apache.lucene.queryParser.QueryParser;
-import org.apache.lucene.search.IndexSearcher;
-import org.apache.lucene.search.Query;
-import org.apache.lucene.store.RAMDirectory;
-
-public class QueryAutoStopWordAnalyzerTest extends BaseTokenStreamTestCase {
- String variedFieldValues[] = {"the", "quick", "brown", "fox", "jumped", "over", "the", "lazy", "boring", "dog"};
- String repetitiveFieldValues[] = {"boring", "boring", "vaguelyboring"};
- RAMDirectory dir;
- Analyzer appAnalyzer;
- IndexReader reader;
- QueryAutoStopWordAnalyzer protectedAnalyzer;
-
- @Override
- public void setUp() throws Exception {
- super.setUp();
- dir = new RAMDirectory();
- appAnalyzer = new MockAnalyzer(random, MockTokenizer.WHITESPACE, false);
- IndexWriter writer = new IndexWriter(dir, new IndexWriterConfig(TEST_VERSION_CURRENT, appAnalyzer));
- int numDocs = 200;
- for (int i = 0; i < numDocs; i++) {
- Document doc = new Document();
- String variedFieldValue = variedFieldValues[i % variedFieldValues.length];
- String repetitiveFieldValue = repetitiveFieldValues[i % repetitiveFieldValues.length];
- doc.add(new Field("variedField", variedFieldValue, Field.Store.YES, Field.Index.ANALYZED));
- doc.add(new Field("repetitiveField", repetitiveFieldValue, Field.Store.YES, Field.Index.ANALYZED));
- writer.addDocument(doc);
- }
- writer.close();
- reader = IndexReader.open(dir, true);
- protectedAnalyzer = new QueryAutoStopWordAnalyzer(TEST_VERSION_CURRENT, appAnalyzer);
- }
-
- @Override
- public void tearDown() throws Exception {
- reader.close();
- super.tearDown();
- }
-
- //Helper method to query
- private int search(Analyzer a, String queryString) throws IOException, ParseException {
- QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "repetitiveField", a);
- Query q = qp.parse(queryString);
- IndexSearcher searcher = newSearcher(reader);
- int hits = searcher.search(q, null, 1000).totalHits;
- searcher.close();
- return hits;
- }
-
- public void testUninitializedAnalyzer() throws Exception {
- //Note: no calls to "addStopWord"
- String query = "variedField:quick repetitiveField:boring";
- int numHits1 = search(protectedAnalyzer, query);
- int numHits2 = search(appAnalyzer, query);
- assertEquals("No filtering test", numHits1, numHits2);
- }
-
- /*
- * Test method for 'org.apache.lucene.analysis.QueryAutoStopWordAnalyzer.addStopWords(IndexReader)'
- */
- public void testDefaultAddStopWordsIndexReader() throws Exception {
- protectedAnalyzer.addStopWords(reader);
- int numHits = search(protectedAnalyzer, "repetitiveField:boring");
- assertEquals("Default filter should remove all docs", 0, numHits);
- }
-
-
- /*
- * Test method for 'org.apache.lucene.analysis.QueryAutoStopWordAnalyzer.addStopWords(IndexReader, int)'
- */
- public void testAddStopWordsIndexReaderInt() throws Exception {
- protectedAnalyzer.addStopWords(reader, 1f / 2f);
- int numHits = search(protectedAnalyzer, "repetitiveField:boring");
- assertEquals("A filter on terms in > one half of docs remove boring docs", 0, numHits);
-
- numHits = search(protectedAnalyzer, "repetitiveField:vaguelyboring");
- assertTrue("A filter on terms in > half of docs should not remove vaguelyBoring docs", numHits > 1);
-
- protectedAnalyzer.addStopWords(reader, 1f / 4f);
- numHits = search(protectedAnalyzer, "repetitiveField:vaguelyboring");
- assertEquals("A filter on terms in > quarter of docs should remove vaguelyBoring docs", 0, numHits);
- }
-
-
- public void testAddStopWordsIndexReaderStringFloat() throws Exception {
- protectedAnalyzer.addStopWords(reader, "variedField", 1f / 2f);
- int numHits = search(protectedAnalyzer, "repetitiveField:boring");
- assertTrue("A filter on one Field should not affect queris on another", numHits > 0);
-
- protectedAnalyzer.addStopWords(reader, "repetitiveField", 1f / 2f);
- numHits = search(protectedAnalyzer, "repetitiveField:boring");
- assertEquals("A filter on the right Field should affect queries on it", numHits, 0);
- }
-
- public void testAddStopWordsIndexReaderStringInt() throws Exception {
- int numStopWords = protectedAnalyzer.addStopWords(reader, "repetitiveField", 10);
- assertTrue("Should have identified stop words", numStopWords > 0);
-
- Term[] t = protectedAnalyzer.getStopWords();
- assertEquals("num terms should = num stopwords returned", t.length, numStopWords);
-
- int numNewStopWords = protectedAnalyzer.addStopWords(reader, "variedField", 10);
- assertTrue("Should have identified more stop words", numNewStopWords > 0);
- t = protectedAnalyzer.getStopWords();
- assertEquals("num terms should = num stopwords returned", t.length, numStopWords + numNewStopWords);
- }
-
- public void testNoFieldNamePollution() throws Exception {
- protectedAnalyzer.addStopWords(reader, "repetitiveField", 10);
- int numHits = search(protectedAnalyzer, "repetitiveField:boring");
- assertEquals("Check filter set up OK", 0, numHits);
-
- numHits = search(protectedAnalyzer, "variedField:boring");
- assertTrue("Filter should not prevent stopwords in one field being used in another ", numHits > 0);
-
- }
-
- /*
- * analyzer that does not support reuse
- * it is LetterTokenizer on odd invocations, WhitespaceTokenizer on even.
- */
- private class NonreusableAnalyzer extends Analyzer {
- int invocationCount = 0;
- @Override
- public TokenStream tokenStream(String fieldName, Reader reader) {
- if (++invocationCount % 2 == 0)
- return new MockTokenizer(reader, MockTokenizer.WHITESPACE, false);
- else
- return new MockTokenizer(reader, MockTokenizer.SIMPLE, false);
- }
- }
-
- public void testWrappingNonReusableAnalyzer() throws Exception {
- QueryAutoStopWordAnalyzer a = new QueryAutoStopWordAnalyzer(TEST_VERSION_CURRENT, new NonreusableAnalyzer());
- a.addStopWords(reader, 10);
- int numHits = search(a, "repetitiveField:boring");
- assertTrue(numHits == 0);
- numHits = search(a, "repetitiveField:vaguelyboring");
- assertTrue(numHits == 0);
- }
-
- public void testTokenStream() throws Exception {
- QueryAutoStopWordAnalyzer a = new QueryAutoStopWordAnalyzer(TEST_VERSION_CURRENT, new MockAnalyzer(random, MockTokenizer.WHITESPACE, false));
- a.addStopWords(reader, 10);
- TokenStream ts = a.tokenStream("repetitiveField", new StringReader("this boring"));
- assertTokenStreamContents(ts, new String[] { "this" });
- }
-}
fnp / pylucene.git / blobdiff